Sebastian Xambó Descamps
Using intersection theory
(EN)
Sociedad Matemática Mexicana, 1996. 122 p.
ISBN: 968-36-3591-1 (Aportaciones Matemáticas, Nivel Avanzado, 7).
Contents
- Introduction. Acknowledgements. Notations, conventions and terminology.
Motivating examples: Bézout's theorem and Plücker's formulas.
- Intersection rings. Cycles and intersections.
Action of mappings on cycles. Chow groups and intersection rings.
Computing Chow groups; Bézout's theorem. Concluding remarks.
- Chern classes. Axioms.
Calculating Chern classes directly from the axioms.
Calculating Chern classes using the splitting principle.
Example: The bundle Ed,m. Riemann−Roch.
- Projective bundles.
The intersection ring of a projective bundle.
Existence and uniqueness of Chern classes. Example: The intersection ring of
Xd,m=P(Ed,m).
- Grassmannians.
Schubert conditions. The intersection ring of Gr(1,n).
Tautological bundles. Linear spaces contained in a hypersurface.
- Flag varieties.
Flags in P2 and in P3.
Grothendieck's description. On Monk's presentation.
- Characteristic numbers.
Conormal variety and contact conditions.
Characteristic numbers and the contact theorem.
Characteristic numbers of twisted cubics.
- Rational equivalence on a blow-up.
Preliminaries.
Chow groups of a blow-up.
Intersections on a blow-up.
- Complete quadrics.
Point and line conics.
Complete conics.
Quadrics in P3: characteristic numbers.
© S. Xambó
Last update: 17/07/2012